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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'aa55a058e9cabc5df98ebc8cb5833de62dffa787eae6df28429eb6e8cfd31c39' 
  AND token = 'bJfl5m0z9xdsbg8/qLEleNHX8bMm9LRImqJWBIjV2U8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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