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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95d6a96004817d338663cc094db7e30a9c21006ac46c64297d2c6b584cd842e5' 
  AND token = 'mAhoSLQXNzvQ8y2gZiJArXm6K3+ygYPeaFe9ZByWZ80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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