Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1aec6a5150bd50dda8d21ec99e4423d2145f4803988b3a9c5943b00c10e82fdb' 
  AND token = 'OKD0hnNd9lAK1Wn+fraNTuw5xLbQJ7jFjhpDfVcegdA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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