Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3a66db695be84b67d3f559c328a0b86db722c93a06d15df4c7e802ebc7358d6' 
  AND token = 'gelo2n70z87WhAfNWJgHtg9SflJdHX8l3R3w4FX5vAk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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