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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '20d65cbb412a48668381d74cfbf9d434169ae5d3773bf992b41648fda21e49ab' 
  AND token = 'wkvcyb8J2gjlR/9oOcJU26cj8yoa5sNo9dX2OUxJXpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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