Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24d3237f1c2d36aac9ce698e7196ac1388f1fac16f4c4923cfafddd481cb3b09' 
  AND token = 'lvq/FId6uteTCE022EKsnANAWWp3ctUfi66n706dyok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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