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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '086a4fdc13ca6c3808f04999c73aa9d8c0e084c9a99a18c62c6458c2469c99d2' 
  AND token = 'aSZKGVAUJVBHFFqWg1DL9WH/g06DGGvCgBeu/TnVwcg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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