Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52842adc41ddcab2c4b11809fe0f1ed6fbaefae91e701bf0f145dd266ea7d887' 
  AND token = 'D3AQ8+weE9YgpPkhf3C29cz69E8G8y+O6BIl44TpmLY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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