Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7beb9a6e55ca1b936224e908ee2c8386145c52ed8e77a0cb4032c18ee9bd6675' 
  AND token = 'rH2yl8O3QKQHI5M8xuYQY8snDkG+7fy1l19/PFLSOUI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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