Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f2306d7564655e28acc20ac15b2fea0e0b7c34622c162ffe67b8c27ce61d555' 
  AND token = 'rQSUO+iU1XD/KwNF+bjPe/I/kro1qnhC6pqPkMPkmgs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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