Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed93be867cc8373052090302a050fcd46ac3add77213f1b8a358225f02a0f99c' 
  AND token = 'MtWJpecCHucZ/c0rwVPy1phlaPq8YS9IWB5a86KWP9c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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