Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44130a1945ebcefcd676f9521a4bbf4294f79bcbf4f7b3851daec6d5242bd001' 
  AND token = '3GgNtK9MFN2vVixIRQDfu3or3aEUUptu8FjnqUWdq3g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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