Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eed4ce23fcec3a517f289fcec8a86dae29a502796693f543215a0214512a10f4' 
  AND token = 'c5OxInRHFVsufR/3rTPx0ceOAHvn5y4NP1QHjYxenNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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