Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed802f2dbbefc7189ba582fc2f1a0115f92b28e88700a270460a965cfee4a97a' 
  AND token = 'Gjt4RKC3cj4gE2n5UN3R8xxR/WBhUOUS6KFdQDZ8pqw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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