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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0a77c7a69b4c2ffe215a85bcac442bc5c0b081413626c5cc49bc473831e259b1' 
  AND token = 'jxqK7vb31m5hVpDooop8Lnje0+fvczhAVvd9SID/O34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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