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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7930b22f055418d4b1c39b44cb28d49a85c88f025c8ca47d2db2b547b9bdcb79' 
  AND token = 'rAETZs4OMtMXemnSKuktqo6E8CTFW+G8869Rdww2Lk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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