Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20926d58e0ecc6612b2332b9039f9a302821ea38a670565bcc952060c598c5ec' 
  AND token = 'FaQmO/7d/4PzOvUQ1DlDqNGnq7mdHKmFfiE8f0kcKMI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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