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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '130cbc0f3c2f5c6dfdfbafb3302cd9c90f9ca2deadc4790d04afda2a62f09f3b' 
  AND token = 'N6GelJgO4gDo7qWP6axV35e93cEUwSNTXCFV29IyHE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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