Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '155708dc9e0fdd91be5091b0b71c9d0fdc8bb9a7ceffb010a889296e141ac41d' 
  AND token = 'nEGuylGjuwsTRQNx3oVML3Ei2ege9SEWtMAwhN5CLv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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