Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4446dac652031dc8668509e2fcecb5aad24913c4a14b19e3c5de983a165d80c5' 
  AND token = 'acQXsLdThv2d+CtrrmTtXXjqJ2URmKEKObtKpFDESME=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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