Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe741ba792dd9e72166994c79556ef869a006782e5058a1dfaa315ac1b72d657' 
  AND token = '2AffQpz4o4fZjgeKG3nM14wHerr4ouSkNFVkuxj9+78=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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