Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '898aa57698b9a17e512f52a1a8c55dab0babd6f97e79c9959af2707b478fcdd4' 
  AND token = '7+5mWc4tJ9vh23EWRI27IL62XP1hac1YlyN+OvzSLE8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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