Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ccee1445ac733e03c623d5d8cf9c4791c20b4d048482496abf29f35cce6de8b0' 
  AND token = '6ad8q/tnEiGIdigs1NTLswPu2E1ofBdnye83EHIgtd4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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