Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf124caa4db17f51e31f00913c2b92f9f44aef037a2a09271b1e119333153517' 
  AND token = 'rXvh6ylFp3CVv8vCMyjs5bGwOuUwJq0/rZUmGibLInA=' 
  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"
    }
  }
}