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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8065ba7ada774655e86c92bac8c30e1ba3fbc0e7f5f841efbfcc482a65f71a2c' 
  AND token = 'wEVfRypNFZ55admXaPlBoHp24zhYuR3H/8bNJzS6kyQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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