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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd22d0a74f4e38b9a99ec8775de4201045a9ed67c4e87a27bbafbef22558ee961' 
  AND token = 'BnhmrptnM6RTxOY859ZZLqYUwfFnYraAncGfMqnpRLM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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