Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c25670d379f0b02b1945c351814329dd0d3f8c6632fbd302c80f9f785a480bd' 
  AND token = 'pl4b+vomDvTNFr+w9DhUu4iz0IG023jV9fczJIrsbnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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