Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4e4710bc7015567817e912b060c71946df2f7f47f7da52b870a94668fbfa1dd1' 
  AND token = 'KNxbQ7+PuYWKa1f46YANDNkOD3ETGW9OYTRq8Y2//mk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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