Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2713b7d86bb1ede7b6e34b1d5779b8dec36e1d2db74050581cfeff80095c3339' 
  AND token = 'k1YCEnBMARmTJvOIzJnW/rnpIAbRu9hiL4jlaoEAD60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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