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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1fa99495928b4c2fffa9b9ffb99f74d108500d5756d0232d96fe69fa5578dd2' 
  AND token = 'E/ptnoYa/q/aWYLGAhUv9Nl6/WydLV7G800aFFGVhO0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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