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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '2cd7cd1bf3f4c8d21dbcee59c2a8545d42fb88cadea04c0312919c70b184c86b' 
  AND token = 'fqtwY91grdwgOC6yzaBEM5O3PPNFUDrd9N2HHVX63rw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}