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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8ed99548d95b6f9b5cb952f52c3ca330146604d8dc42bda0b7edb2e44841e0fd' 
  AND token = 'btlIa7nMzTwGL9iFcHKcTQNkObKflZJec/D2qYqwZOo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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