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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dd46f2aeeb211ac666c6a52c4893d23c85ba5bf1e422578ce5a3440d1f7d3df0' 
  AND token = '2CbMZb/jl/L/XKNHq5m6W491KuI8U6qSM0wL3M1aoYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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