Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69c8ba67ab10f022900e91a787a70614a2207422cce251b0395a0147c763b59c' 
  AND token = 'nzr0OV/3oEl3AMo3NPFyzooFQYCvO2L5H6ZxPfxB8AM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}