Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92c63ef8b27277e0226eae48546c0d98a033f1bf7dc72f81001bf82047ca1cc0' 
  AND token = 'Q1hkGHCl11+1llh6HHkYc0I8jSRQbyWNFOFZ2xowM7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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