Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c0a1a8e5cd38dc01158131f75e6424a05dc38c112716259ceff4e0f4c1fac84' 
  AND token = 'Aue7ko2A/F86jtmG+33/XIvLECkologrRQcriidF+lQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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