Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a06d8216d7532e48896a5ea8ae4bf4e8c91320a13f3f106dbb16109b91ff1ba' 
  AND token = 'SiELiPORdZCsPrJNGlTDssA7BD9m9+ydN1t09TVjcDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}