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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05aa24a377bb0232ead848c76b9bd5355609a3290a7096ab3d6c020a7839199a' 
  AND token = 'p7mR/ybzx3sFE+xe+vVr6+INcMX49d6leOq61yd/5v8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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