Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0992e4c9a98f96ff0e97241186b3e83ff48c486be518eedcae991c53a2e8ab4b' 
  AND token = 'U5PhSUVn95oawaTTzYTuvrOvdNoTcKCisqh9x/I5uqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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