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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'efa45da67c5ffbf1f758a6773cdf2f3d5190f7da9c91c9c4cd565658224ec168' 
  AND token = '4mTb0g7cDg1weOOcWwI5U/VJLzi9Ku61v4EAVSDylRE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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