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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '33fe7e7cea829e3cf71a79c1247d9c7ba1a56bd22bed5423e9b2369e285bcfa5' 
  AND token = '/N1NwjeCpKOlMmjy2JrWoKDyDX7AeaXKns3yNrDir1M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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