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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02bab0b7a3eb7c29f000fb4f8ee1ce71ad8fb71d0ca49dd4c4cacb665c0026cc' 
  AND token = 'Ydhqn1PV+i/+wetswSKJpize51Nuc4wI5IRdxnoMXNc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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