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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0058ad6e71d257cdbeb5e9e255a5e66a634960d0690ea67e0f4e4d700ae62939' 
  AND token = 'ZuJtfR/4/L5J9MTm/5sf37teDkSU01lWAl55Q1HIRRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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