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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07f8b33bd5964a51c03fa5dc0ca5055e3f57ffa285359a9f4908055124a5a6ee' 
  AND token = 'dd2+tJvQ3GMTMC9V7ka10xAe5cUpO9PehAyjGxpSdlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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