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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6c5b1955954174050eb62806d0dc89f1b8a4428849290a6e67dfb1c995445663' 
  AND token = 'c029eBbFDXrFN7yeW6itCTBokLZI0qAcedybP19xeCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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