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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1041d79b54f4e8dad305c215a3aa2bac213d48c74ed0e861f669f82f216100e9' 
  AND token = 'qGarFkn5hHtXhX2AcAMHyOhD6bNKL31t2fMfmrR2W1s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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