Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56373872402415d0fd53602b1fe1005b12cc7f19c146fdc40b826ec9662afc1a' 
  AND token = 'sJ9EPPCVuYRRbCBrJaTkliZE477X3OqV7APNHalrV30=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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