SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '229205c5d0b3667d7a22317446947f9918fc9f3c907e677ffb5168e060464d43' 
  AND token = 'Ug8uVyfYBgp8h9O5JZ3xOcTqqg4bym4jvoXVYowTwCw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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