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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5e113fa99e9c2246832954b181a8760dc719ee923c3073177c5f343aa78f4ec2' 
  AND token = 'Fs6Q7N1WvcCZ8epJtfmKFxNnUmERLkhd13eZ5zeCtx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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