Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d4eeeec997e79d82470c427ab1d7488ad5d233c978cd046c6c7bb9debb085db' 
  AND token = 'UHBK8tkRgX6aSJNo/cUpMDQLMPjJuYAShbcKFowKmfE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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