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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1180190721af8757fc7717f35af700a039f1ad3785c49bea4f455a1e87ca05a4' 
  AND token = 'DurSPA4WjUpXgz/nk2S/dMY48X+rswrA7w+TE/2O/sQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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