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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ed074f00b320d8211937f289a9fef0066ded91960277ade33b14db9f5dde943d' 
  AND token = 'C4B57zHmYC5oJ0JGu4pK2lUDIXVLC+vF3E3gIb+9WMw=' 
  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"
    }
  }
}