Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eab7598b0c2543f5a05702d0caae4d5a048e15e270164fd8429fd2e8dfc1d803' 
  AND token = 'ciO9Qx26yh96zZz3/Rp2qcvdhOuwu4hKD+nA8KJyqV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00074

JSON explain

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