Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32f1e8d9b4011c44ff1fe61969471fb90bfba41c181ab16e731a8da069188f80' 
  AND token = 'dEQ+w2e9SERn3KHqjgeox4GtP17KaPkLiho2fExb98o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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