Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5622b14dec2c4f0aea7044d9ec4a83b8ac56cce6210737fce4ccbd425b4b284b' 
  AND token = 'zzwtBXz2VCi9+0Qahq/ZriinU6t4J8T4TKVd9VTsPVw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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