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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ccddacc2dc4a1266e366cbe8c48a5ae8fa267dcb74e61e80b5d40f1154da123e' 
  AND token = 'KV/ugoMVLnYIYyfzgOv23/0R0sOq2Mw5b5FxLZzFe3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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