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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '826cd75321c94c850b4c3aaa55670c024a95108ffcc9977d5c9afc827ecedd53' 
  AND token = 'VQDyvfpGNRclqQfKPmV36mXultj751dwNN8ML+2NhCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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