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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '711cd1e82a8edeb402027b51945599811d0eeaa5e0ce63ef3c5e6d78b60b3626' 
  AND token = 'ThYd68hSmk6YVwDZ6kXHh0B63jx6tKwCewL/jJhgrN4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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