Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8fa431e3199e40c8dfa027ac01cbe11dc2be9ed399e54979254db9e86b19d5e3' 
  AND token = 'tcAGLJUY030iGUlsYO7o86qNGO9V+HnCGtHVO19bMJE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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