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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ab54ce8cbb24a79226ef6a365223bac1e2c0d72a11e8b198d4ca09fb2a107134' 
  AND token = 'tWvLzCdmJ3HluwbWLMIZEajNG1ywy9NPD6y8jJa2Hk4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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