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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0d0272e300932853695fbc9bae182691b7041622bf8b51ca2e4698dcf9b93335' 
  AND token = 'WDsnJIZcsiyFOtui50js2Dk10ilmHBIkjaH5ghvWzvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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