Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '037f681d46ab942b3cd11f2312f7ae22fcc9fae2847aba20b0b7788197e49566' 
  AND token = 'PZzDiCD0QdS+tqss656JkOIxtIOlYwyJM5qP6GbHPEQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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