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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '867280ec30015f4740e2cd81e8730aa061675c1e0f35f30c4e29743404d19508' 
  AND token = 'd2FPCjcDRQOeO06qn/dS75ilWk8qM1AcvXlw2Bz/860=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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