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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '09d7e2946ba6b4d0cb71df57695f106dd0d7b22677ec0410ae160cd9ff4ee71c' 
  AND token = 'JtLUzR51legCkfIqEjArMWUP/pCKkH2IRZvl76M6QBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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