Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ccc3b324b72ddf65e7783e823957f519ba003ba1cfeeb0ed8cf436dc4790708d' 
  AND token = 'o9glTC90T+a7OIiEcPp+qzn6MJOltdFTK1lEuxWyVC8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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